pneumonia X-ray feature of heart failure

Can someone tell me what is the term basal bronchitis really means? ( Try to google the term and see the results)

It was mentioned as one of the cause for lung congestion.

IMHO, the term bronchitis is self-explanatory and the word basal it was referring the base of lungs. Kind of funny to find bronchi in the base of lung!!! Maybe basal pneumonia is more acceptable.